extremely

adverb

ex·​treme·​ly ik-ˈstrēm-lē 

1

: in an extreme manner

2

: to an extreme extent

Synonyms of extremely

• very
• incredibly
• terribly
• highly
• too
• so
• badly
• damned
• severely
• damn
• really
• super
• desperately
• intensely
• seriously
• far
• exceptionally

Examples of extremely in a Sentence

an extremely hot day

Recent Examples on the Web

Because of spontaneous and piezoelectric polarization in its crystal structure, GaN heterostructures can naturally induce extremely thin sheets of mobile electrons and holes. — Rupendra Brahambhatt, Interesting Engineering, 30 Aug. 2026

This case is critical to talent working outside of California for one of the California studios, since California has been extremely aggressive in seeking to tax them. — Schuyler Moore, Forbes.com, 30 Aug. 2026

Precious metals like gold and silver can quickly become discolored by skin care and styling products, and pearls are also extremely sensitive to them. — Larissa Ratschkowski, Glamour, 30 Aug. 2026

Its main instrument, known as the Wide Field Instrument (WFI), will take extremely wide images of the universe, capturing ultra-high definition views across broad swaths of the sky. — Josh Dinner, Space.com, 30 Aug. 2026

Word History

First Known Use

1509, in the meaning defined at sense 1

Phrases Containing extremely

• extremely high frequency
• extremely low frequency

Rhymes for extremely

• seemly
• unseemly